Flux for the autogenous welding of aluminum.



MAX' ULRGH SCHOOP, OF OIS COLOMBES,

FLUX FOB THE AUTGENQUS WELEENG' 0F) No. $22,523, Specification o Letters Patent.

To all whom' may G01/wem:

B0 it known that MAX s, citizen of the Republica a residenQ-O mombes Sei have nvened a n the Autogeuous which the oowing is lum, @opy Gi: im of aluminum il .Spte eri, edge or with th@ ''us piece,

Various patented@ but a haw, Aluminum ss meta, suh as oys @ving a aluminu is .i

metfis from el Accodng i@ possible to Wed astngs, sheets, :L means of a Suitable now pip-e m @aus of a flux, preferably in tb which isY able of Reducing a'lumhu to suit the particular pieces 'of be soldered and the parlcua Played.

us@ this .Wei

'i oxid which am foned, im oxldlzmg substance may vary m smnos 51011, and as a gene-ml ru'ie Lms; .be mof So iur as tha flame is consumed, it 1s convenient to employ Oxy-ace@ 01' a Ham@ fed by @Xxx/@en aua illuminating gas. ,ducng agent riuminum p phi@ sin.

fname en .s1 V

.ln the Welding of aluminum in accordance with my invention, it makes little difference whether oil not the parts to be joined are directly Welded one tothe other, or Whether pure aluminum is ap )lied to t-lie Welding joint. lf the parts to joined do not unite evenly, separate pieces of metal in the foi-in of wire or thin sheets may be inserted at the desiredpoints and a be obtained.

As the chief essential of my process consists in the dissolution of the aluminum oxid at the time the' aluminum is heated and fused, it is evident iiielting together aluminum.

l claim :w

1. A flux for welding aluminum, including a ohlorid and a bisull'ate.

2. A luX for welding aluminum, containaiid purifying of scrap fate.

3. A HuX for welding' aluminum, consisting` of sodium, twelve parts, bisulfate of potasperl'ectly welded 'joints that l may employ it innig an alkaline chloridand an alkaline bisulaluminum., consisting' render the fusibility of sium, iour parts, and chloiid of lithium, twenty parts. l

7. A Hui; for Welding` aluminum, contain` ing haloid salts of alkali metals and a bisulfate fused together.

8. A fiux for Welding aluminum, comprising haloid salts of alkali metals and bisullate of potash fused together, ground and mixed to a paste.

9. A ihn; for Welding aluminum eontain-` ing a haloid salt of an alkaline metal and a bi-sulilte fused to` ether.

10. The inetho of making,` a welding compound Which comprises mixing together haloid salts of alkali metals and a sulfate oi' an alkaline earth metal in proportions to render the fusibility of the flux slightly below the fusing point of aluminum and fusing the mixture.

1l. The method of making` a Welding comf pound which comprises mixing together haloid salts of alkali metals and a salt of a metal of the alkaline earth in proportions to the iiux slightly below the fusingl `point of aluminum, fusing the mixture, eomn'iinuting it and mixing it to a paste.

ln testimony whereof l have signed my name to this specification in the presence of two subscribing witnesses. v

MAX Uliltl( lll SGH .O'li

Witnesses: j

CLAIR W. FAiitANk, Evian/im) B. Ivl'ARsiiALL. 

